I Am Going!

Gerald is careful. Piggie is not.
Piggie cannot help smiling. Gerald can.
Gerald worries so that Piggie does not have to.
 
Gerald and Piggie are best friends.
 
In I Am Going!, Piggie ruins a perfectly good day by telling Gerald she is going. If Piggie goes, who will Gerald skip with, play Ping-Pong with, and wear silly hats with?